It’s time to update your Nexus 4 to latest and customized Android 4.4.2 KitKat with the help of custom firmware Gummy 2.1. It’s really good idea to have a customized AOSP based ROM instead of having pure AOSP ROM. Gummy 2.1 is based on latest Android 4.4.2 KitKat and build using CM11 source. You can download and install custom firmware Gummy 2.1 on your Nexus 4. Since, Nexus 4 is capable enough to run Android 4.4.2 KitKat smoothly, Gummy 2.1 going to be a great experience for you. To learn how to flash this ROM, continue reading this guide to know how to install Android 4.4.2 KitKat based Gummy 2.1 custom ROM on Nexus 4.

Some of the cool Android 4.4.2 KitKat features that you will enjoy is Screen Recording, Tap to Pay (Google Wallet for everyone), NFC emulation for non nfc devices, 14% less memory usage, cloud printing from Gallery, Google Home is the new Launcher, Core System Processes Trimmed, apps are efficient and responsive on all devices, the all new 'procstats tool details' memory use, Full-screen Immersive mode, seamless change in resolution during media playback, Phone dialer got local business detection, redesigned Quickoffice and many more.

As said already, this is a test build and you should expect some bugs in it. All bugs and issues expected to be fixed as development progress towards a better build.

Gummy Features:

New base built from AOSP

Status Bar Mods

Theme Manager

Hardware Key Mod

Lock Screen Mod

Many Wallpapers

Performance Control

Application Permission Controls

Carrier Label Options

Background Style

Lock clock widget

Warning!

This tutorial is only for Nexus 4. Don’t try this guide on any other Android device. Also, we (True Android Team) are not responsible for any damage caused due to the instruction given in this page. Try this at your own risk. However, it is very unlikely that your device will be damaged if you follow all the instructions as it is which are mentioned in procedure.

4. Make sure USB Debugging is enabled otherwise you won’t able to transfer file between PC and Nexus 4. [Guide].

5. Your device have latest CWM version 6.0.4.4 and up or TWRP 2.6.3.0 and up installed. [Guide]

If you done everything that we mentioned above then you are ready to follow step-by-step guide on how to install Android 4.4.2 KitKat based Gummy 2.1 ROM on Nexus 4. In below tutorial we discussed the process assuming your device a non-touch recovery; you can complete the process using touch if applicable.

Google Apps [Filename: gapps-kk-20131119.zip] or any other 4.4 KitKat GApps

How to Install Android 4.4.2 KitKat based Gummy 2.1 ROM on Nexus 4

Connect your device to PC using USB cable and then copy downloaded files to the SD card of your device. Important: Don’t extract any files.

Disconnect USB and then turn off your Nexus 4.

Boot into recovery mode. Press and hold Volume Down + Power key together and release the Power key once the Google logo appears, but keep holding the Volume Down key. You will be in Bootloader mode now. Press Volume Down two times so that Recovery option appears, and then press Power key to reboot into recovery mode. Use Volume keys to browse between options in recovery while Power key to select an option. Alternatively try this: Recovery Mode without Key Combination.

Perform a Nandroid backup of your existing ROM that you can restore later if this new ROM not work or you want to go back into your previous ROM. To perform a backup, select Backup and Restore, then on the next screen, select Backup again. Go back to main recovery menu after backup is complete.

Select install zip from sdcard, then select choose zip from sdcard (or /sdcard1 for external storage). Now, locate the Gummy 2.1 Zip file that you copied earlier in Step 1 and select it by pressing Power button. Confirm installation by selecting Yes – Install _____.zip on the next screen. The ROM installation will begin.

Once the ROM installation process end, repeat the step 6 but choose the gapps-kk-20131119.zip file instead of ROM zip to install the Google apps package.

When installation is completed, go back to the main recovery menu and select reboot system now to reboot your Nexus 4and boot up into Android 4.4.2 KitKat ROM Gummy 2.1.

Returning to Previous ROM: To go back to your previous ROM, boot into recovery, select backup and restore then restore your previous ROM by selecting it from the list.

Tutorial For TWRP Recovery Users:

Connect your device to PC using USB cable and then copy downloaded files to the SD card of your device. Important: Don’t extract any files.

Disconnect USB and then turn off your Nexus 4.

Boot into recovery mode. Press and hold Volume Down + Power key together and release the Power key once the Google logo appears, but keep holding the Volume Down key. You will be in Bootloader mode now. Press Volume Down two times so that Recovery option appears, and then press Power key to reboot into recovery mode. Use Volume keys to browse between options in recovery while Power key to select an option. Alternatively try this: Recovery Mode without Key Combination.

Create a Backup using TWRP Backup Option.

Perform a Factory Reset (this will delete all apps and their settings and game progress). To do this, Tap on Wipe, then at the bottom of the screen do a Swipe on the ‘Swipe to factory reset‘ option.

Now its time to add zip file for flashing. Tap on Install, then browse to the location where you saved the files and tap on the Gummy 2.1 Zip file. Then tap on Add More Zips, and add gapps-kk-20131119.zip. Now at the bottom of the screen, do a swipe on the Swipe to confirm flash option to begin flashing.

When installation is completed, go back to the main recovery menu and tap on Reboot and then, tap on System to reboot your Nexus 4and boot up into Android 4.4.2 KitKat ROM Gummy 2.1.

Returning to Previous ROM: To go back to your previous ROM, boot into recovery, select Backup then through Restore option, restore your previous ROM by selecting it from the list.

Congrats! Android 4.4.2 KitKat firmware based custom ROM Gummy 2.1 is now installed and running on your Nexus 4. If you stuck on Gummy boot logo more than 5 minutes then go back to recovery and perform Step 5 (wiping task) few more times before rebooting your device.